Question: What countries are part of the European Union?
Paraphrase: What nations are portion of the European Union?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q458 wdt:P150 ?obj . ?obj wdt:P31 wd:Q3624078 } 
Answer: Ireland, Belgium, Hungary, Spain, Sweden, Denmark, Luxembourg, Finland, Italy, Poland, Lithuania, Austria, Greece, Portugal, France, Germany, Estonia, Latvia, Slovakia, Slovenia, Czech Republic, Romania, Bulgaria, Croatia, Cyprus, Malta